The way bitcoin price grew in 2017 is enough reason to make the world go crazy. Those that already know about bitcoin, want to gain from it... A lot of people are hopping in.

Some see bitcoin as an investment, to others it's predominantly disruptive technology, and for others, it's seen as a secure, decentralised hedge against a financial establishment that's let them down one (or more) times too many.

Also some countries at some point in the past 10-15 years experienced a currency crash giving some reasons to doubt the stability of their government money.

There is still a lot of people that dont know or understand bitcoin (cryptocurrency) yet. Imagine what the world will be like when everybody is in.